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4 years ago

Evaluate the function f(x) = x^2 +3x + 5 for x= -2

Mathematics

1 answer:

forsale [732]4 years ago

6 0

Answer:

f(-2) = 3

Step-by-step explanation:

f(x) = x² + 3x +5

f(-2)=(-2)² + 3*(-2)+5

= 4 - 6 +5

= 3

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Please help me, its due today!!!

zlopas [31]

Answer:

$7$

Step-by-step explanation:

So we have the expression:

$|3x-1|$

And we want to evaluate it for x=-2.

So, substitute -2 for x:

$|3(-2)-1|$

Multiply:

$=|-6-1|$

Subtract:

$=|-7|$

The absolute value of a negative is positive. So:

$=7$

And we're done!

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4 years ago

Match the people with their accomplishments. 30 points!!

Masja [62]

Answer:

Clara Barton- founder of the American Red Cross

Sally Tompkins- fought for equal pay

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4 years ago

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3 years ago

Read 2 more answers

Find the inverse function<br> y=-5x+20

BabaBlast [244]

Answer:

$x = -\frac{1}{5} y + 4$

Step-by-step explanation:

The inverse function is a function that reverse a given function.

You can follow this procedure:

The given equation is $y = -5x +20$

First change the position of the x, because is the variable you need.

$-5x+20= y$

Now substract 20 in both sides of the equation:

$-5x+20-20= y-20$

Do the necesary calculations

$-5x= y-20$

Now divide by -5 both sides of the equation to clear X

$\frac{-5x}{-5} = \frac{(y-20)}{-5}$

simplify:

$x = \frac{(y-20)}{-5}$

$x = \frac{(y)}{-5}-\frac{20}{-5}$

Finally you will get:

$x = -\frac{1}{5}y+4$

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3 years ago

Which expression below is equivalent to 4/5(1 1/4x + 3 1/3 )

zysi [14]

First, change the mixed numbers into improper fractions: 1 1/4 —> 5/4 and 3 1/3 —> 10/3

rewrite equation: 4/5(5/4x + 10/3) and then distribute to 4/5(5/4x) + 4/5(10/3) = 20/20x + 40/15

simplify the sum: x + 8/3

convert 8/3 to a mixed number: 2 2/3

final answer: B. x + 2 2/3

4 0

2 years ago